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Proceedings Paper

Limitations To Accuracy In Dual Energy Digital Fluoroscopy
Author(s): Robert E. Alvarez; Leonard A. Lehmann; Albert Macovski; William R. Brody
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Paper Abstract

A digital fluoroscopy system has many desirable features for energy selective imaging. Unfortunately it has significant problems which may prevent it from being used for this application. Two techniques for overcoming the limitations of digital fluoroscopy are presented. The first attacks the lack of absolute measurements in data from digital fluoroscopy. The nonlinear processing used in energy selective imaging requires absolute data. Techniques are presented which use relative measurements and still allow selective material imaging. Digital fluoroscopy is normally used for subtraction imaging so that errors in the data tend to cancel. By using a generalization of subtraction imaging called hybrid subtraction, the errors introduced by using fluoroscopic data in energy selective imaging can be significantly reduced.

Paper Details

Date Published: 4 November 1981
PDF: 6 pages
Proc. SPIE 0314, Digital Radiography, (4 November 1981); doi: 10.1117/12.933046
Show Author Affiliations
Robert E. Alvarez, Stanford University (United States)
Leonard A. Lehmann, Stanford University (United States)
Albert Macovski, Stanford University (United States)
William R. Brody, Stanford University (United States)

Published in SPIE Proceedings Vol. 0314:
Digital Radiography
William R. Brody M.D., Editor(s)

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